My snake plant finally pushed out a new leaf after months of just sitting there, and I'm honestly not sure what I did differently

My snake plant finally pushed out a new leaf after months of just sitting there, and I'm honestly not sure what I did differently. I've been watering it maybe once every three weeks and it's by an east-facing window, but I can't tell if that's what triggered the growth or if it was just ready. Does anyone else find that Sansevieria can be kind of unpredictable, or am I overthinking it? I'm still learning the rhythm of my small collection.